首页
登录
职称英语
In the early 1950s the researchers who produced the first clad glass optical
In the early 1950s the researchers who produced the first clad glass optical
游客
2024-08-16
41
管理
问题
In the early 1950s the researchers who produced the first clad glass optical fibers were not thinking of using them for communications.【C1】H______, fiber optics was already a well-established commercial technology when the famous paper by Kao and Hockham,【C2】______ (claim)the use of low-loss optical fibers for communication, appeared in 1966. The first low-loss silica fiber was described in【C3】______which appeared in October of 1970. The date of this publication is sometimes【C4】______(cite)as the beginning of the era of fiber communication. Although this development did receive【C5】______(consider)attention in the research community at the time, it was far from inevitable that a major industry would evolve.
The technological barriers appeared formidable because there were serious doubts as to 【C6】wh______these fiber components could ever be produced economically enough, but the market potential was very significant.【C7】______(consequence), research and development activity expanded rapidly, and a number of important issues were【C8】re______during the early 1970s. During the middle and late 1970s, the rate of progress towards marketable products accelerated as the emphasis【C9】______(shift)from research to engineering. Fibers with losses【C10】 app______the Rayleigh limit of 2 dB/km at a wavelength of 0. 8 μm were produced.
By 1980 improvement in component performance, cost, and reliability led to major commitments on the part of telephone companies. [br] 【C5】
选项
答案
considerable
解析
此处需要形容词形式修饰名词attention。considerable attention相当多的关注。此句可译为:尽管当时这项技术在研究领域确实引起了极大的关注,但要发展成一个重要产业还相差甚远。
转载请注明原文地址:https://tihaiku.com/zcyy/3721578.html
相关试题推荐
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
随机试题
Thefirstparagraphmainlyindicatesthat______.[br]Thefunctionofexaminati
青光眼患者的眼压约在22~42mmHg范围,非青光眼患者的眼压约在14~26mm
关于施工招标文件,下列说法中正确的有( )。A.招标文件应包括拟签合同的主要条
肾病综合征患儿激素治疗与预防接种的关系是A、停药6个月~1年后进行 B、停药后
被誉为马来西亚三大珍宝的是( )。A.兰花 B.巴迪布 C.兰卡威水晶
当路堤原地基横坡陡于1:5时,原地基处理正确方式有()。A.原地基应挖成台阶
外阴血肿应选用的外治法是()A.坐浴 B.外阴冲洗 C.贴敷 D.阴
材料从工地仓库、现场集中堆放地点或现场加工地点至操作地点的水平和垂直运输,所需的
以下为某求助者的MMPI的测验结果: Hs量表的K校正分应当是()
管理毒理学是A.从定性角度确定外源化学物是否可能对人类健康造成损害及损害的程度和
最新回复
(
0
)